"David Hansen" wrote in message
...
On Fri, 10 Nov 2006 09:06:14 -0000 someone who may be "Doctor
Drivel" wrote this:-

Nice try, but wrong. I was involved
with in instant hot water heating in
buildings with large demands decades
ago and I still am today.

Screwing them to the wall and not knowing what is going on is not good
enough.

Nice try, but wrong. The equipment concerned was screwed to the
floor and I knew what was going on inside.

Keep digging the hole for yourself.

I'm standing on the hill looking down ion the hole you dig.